Company lists · Data refreshed September 2026

Top 25 Geothermal consultants based in Switzerland

Name: Geothermal consultants based in Switzerland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 383 companies tracked

RevenueBase identified 383 geothermal consultants headquartered in Switzerland as of September 2026 and tracks 2,954 professional contacts across them, including 1,206 with verified work emails. Zurich is the largest hub.

This list covers geothermal consultants headquartered in Switzerland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

383Companies

2,954Contacts tracked

1,206Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest geothermal consultants based in Switzerland

Ranked by team size

Top 25 of 383 geothermal consultants based in Switzerland, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to geothermal consultants: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Geoquip Marine	Indirect evidence	9001 St. Gallen, SwitzerlandHQ checked Sep 20, 2026	201-500	422 contacts →
	Indirect evidence “Geoquip Marine is a geotechnical data acquisition company safely delivering offshore geotechnical site investigations and engineering services to clients worldwide.” Source: RevenueBase Database · checked Sep 20, 2026
2	Holinger	Indirect evidence	Liestal, SwitzerlandHQ checked Sep 20, 2026	501-1,000	265 contacts →
	Indirect evidence “For over 90 years, HOLINGER has been solving engineering and scientific tasks in various specialist areas related to the water cycle.” Source: RevenueBase Database · checked Sep 20, 2026
3	Soltop Energie AG	Indirect evidence	Elgg, SwitzerlandHQ checked Sep 20, 2026	51-200	84 contacts →
	Indirect evidence “Erneuerbare Energien aus Sonne, Erde, Luft und Wasser nutzbar machen: Diese Kernaufgabe erfüllt die Soltop Energie AG bereits seit über 40 Jahren konsequent und erfolgreich.” Source: RevenueBase Database · checked Sep 20, 2026
4	Betelec SA	Indirect evidence	Villars-ste-croix, SwitzerlandHQ checked Sep 20, 2026	51-200	69 contacts →
	Indirect evidence “Nous sommes une entreprise qui a pour but l'ingénierie, le conseil, la conception, l'établissement de projets, la direction des travaux et l'exploitation dans le domaine des…” Source: RevenueBase Database · checked Sep 20, 2026
5	Karakas & Français SA	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 20, 2026	51-200	59 contacts →
	Indirect evidence “Depuis 1964, notre bureau est spécialisé dans la réalisation de travaux en relation avec le sol.” Source: RevenueBase Database · checked Sep 20, 2026
6	AB Ingénieurs SA	Indirect evidence	Thônex, SwitzerlandHQ checked Sep 20, 2026	51-200	59 contacts →
	Indirect evidence “Fondé en 1979, le bureau Pierre Amsler était spécialisé dans les études géotechniques et les travaux spéciaux dès sa création.” Source: RevenueBase Database · checked Sep 20, 2026
7	Weinmann-Energies SA	Indirect evidence	Echallens, SwitzerlandHQ checked Sep 20, 2026	51-200	47 contacts →
	Indirect evidence “Weinmann-Energies est un bureau d’ingénieurs-conseils EPFL-SIA-SuisseIng.” Source: RevenueBase Database · checked Sep 20, 2026
8	DE Cérenville Géotechnique SA	Indirect evidence	Chavannes-près-renens, SwitzerlandHQ checked Sep 20, 2026	51-200	45 contacts →
	Indirect evidence “De Cérenville Géotechnique regroupe sous une même entité un bureau d’ingénieurs-conseils (ICOS) et un service d’essais et mesures (SEM), tous deux spécialisés dans les domaines de…” Source: RevenueBase Database · checked Sep 20, 2026
9	Lemon Consult AG	Indirect evidence	Zürich, SwitzerlandHQ checked Sep 20, 2026	11-50	37 contacts →
	Indirect evidence “Lemon Consult is a specialized engineering and consulting office for energy efficiency, sustainability and renewable energies in the area of building and technical systems.” Source: RevenueBase Database · checked Sep 20, 2026
10	Jäckli Geologie AG	Indirect evidence	8048 Zürich, SwitzerlandHQ checked Sep 20, 2026	51-200	36 contacts →
	Indirect evidence “Die Jäckli Geologie AG ist ein eigenständiges Schweizer Beratungsunternehmen mit verschiedenen Standorten in der Nord- und Zentralschweiz.” Source: RevenueBase Database · checked Sep 20, 2026
11	Caeli Ingénierie	Indirect evidence	Carouge, SwitzerlandHQ checked Sep 20, 2026	11-50	33 contacts →
	Indirect evidence “Bureau d'études CVCSE, Energie, Automatisme du bâtiment, MCR, Physique du bâtiment.” Source: RevenueBase Database · checked Sep 20, 2026
12	Energa SA	Indirect evidence	Lausanne, SwitzerlandHQ checked Sep 20, 2026	11-50	29 contacts →
	Indirect evidence “Situé à Yverdon-les-Bains et à Lausanne, ENERGA SA est un bureau d’ingénieurs-conseils EPFL-SIA actif sur l’ensemble de la Suisse romande.” Source: RevenueBase Database · checked Sep 20, 2026
13	Friedlipartner AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	11-50	28 contacts →
	Indirect evidence “Wir beraten seit 1974 Bauherren und Planer in allen Fragen rund um den Baugrund.” Source: RevenueBase Database · checked Sep 20, 2026
14	Geo2x SA	Indirect evidence	Yverdon-les-bains, SwitzerlandHQ checked Sep 20, 2026	11-50	28 contacts →
	Indirect evidence “Geo2X is a Swiss Company based near Geneva.” Source: RevenueBase Database · checked Sep 20, 2026
15	Emmar SA	Indirect evidence	Bulle, SwitzerlandHQ checked Sep 20, 2026	1-10	28 contacts →
	Indirect evidence “Emmar SA est un bureau d’ingénieurs spécialisés dans le domaine de l’électricité, des énergies renouvelables ainsi que des nouvelles technologies.” Source: RevenueBase Database · checked Sep 20, 2026
16	Durena AG	Indirect evidence	Lenzburg, SwitzerlandHQ checked Sep 20, 2026	11-50	26 contacts →
	Indirect evidence “Unserem Ingenieurunternehmen ist es ein grosses Anliegen, individuell und persönlich auf Ihre Wünsche einzugehen.” Source: RevenueBase Database · checked Sep 20, 2026
17	Tecnoservice Engineering SA	Indirect evidence	Fribourg, SwitzerlandHQ checked Sep 20, 2026	51-200	26 contacts →
	Indirect evidence “TECNOSERVICE ENGINEERING SA est un bureau d’études et d’ingénieurs conseils pour les installations techniques et études énergétiques liées au bâtiment et à l’industrie.” Source: RevenueBase Database · checked Sep 20, 2026
18	Ifec Ingegneria SA	Indirect evidence	Rivera-monteceneri, SwitzerlandHQ checked Sep 20, 2026	51-200	25 contacts →
	Indirect evidence “IFEC ingegneria SA is a consulting company in the field of energy, building physics, acoustics and applied environmental sciences.” Source: RevenueBase Database · checked Sep 20, 2026
19	Cement Engineering SA Cesa	Indirect evidence	Geneve Carouge, SwitzerlandHQ checked Sep 20, 2026	11-50	24 contacts →
	Indirect evidence “Cement Engineering SA (CESA) Engineering is a professionals business!” Source: RevenueBase Database · checked Sep 20, 2026
20	Energie Concept SA	Indirect evidence	Bulle, SwitzerlandHQ checked Sep 20, 2026	11-50	23 contacts →
	Indirect evidence “Bureau d'ingénieurs-conseils en Techniques du bâtiment CVSE, spécialiste des réseaux de chauffage à distance à bois et de l'efficacité énergétique.” Source: RevenueBase Database · checked Sep 20, 2026
21	Sieber Cassina Partner AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	11-50	23 contacts →
	Indirect evidence “Unsere Dienstleistungen stehen oft im Spannungsfeld von Nutzungs- und Schutzinteressen.” Source: RevenueBase Database · checked Sep 20, 2026
22	Hastag St. Gallen BAU AG	Indirect evidence	St. Gallen, SwitzerlandHQ checked Sep 20, 2026	51-200	21 contacts →
	Indirect evidence “Die HASTAG St.” Source: RevenueBase Database · checked Sep 20, 2026
23	SB Technique SA	Indirect evidence	Genève, SwitzerlandHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “SB technique est un bureau d'Ingénieur Conseil en chauffage, ventilation, climatisation et sécurité du bâtiment développant des concepts énergétiques ambitieux pour des…” Source: RevenueBase Database · checked Sep 20, 2026
24	Guggisberg Kurz AG	Indirect evidence	Ostermundigen, SwitzerlandHQ checked Sep 20, 2026	51-200	18 contacts →
	Indirect evidence “Mit über 90 erfahrene Mitarbeitenden ist die Guggisberg Kurz AG in der Lage sowohl grosse Objekte auszuführen, als auch sehr flexibel zu agieren.” Source: RevenueBase Database · checked Sep 20, 2026
25	Energiebüro AG	Indirect evidence	Zurich, SwitzerlandHQ checked Sep 20, 2026	11-50	16 contacts →
	Indirect evidence “energiebüro ist das Kompetenzzentrum für Solar- und Wasserkraft, Energieeffizienz und Gebäudesysteme.” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: geothermal consultants. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names geothermal consultants.
Partial evidence: Its own public description names part of geothermal consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name geothermal consultants. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 383 geothermal consultants based in Switzerland

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,206 reachable decision-makers.

Free signup · no credit card

View the full list →

Geothermal consultants based in Switzerland at a glance

As of Sep 20, 2026

40.8%Verified-email coverage

7.7Average contacts per company

1-10Median size (employees)

7.6%Largest-city concentration · Zurich

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

248

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 383 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among geothermal consultants, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Switzerland whose own description of what they do matches “geothermal consultants”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names geothermal consultants), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among geothermal consultants, and records with no verified work email. Companies headquartered outside Switzerland are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,206 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Geothermal consultants by metro

Geothermal consultants in Zurich29

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names geothermal consultants, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many geothermal consultants are there based in Switzerland?

RevenueBase identified 383 geothermal consultants headquartered in Switzerland as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Geoquip Marine, headquartered in St. Gallen, tops this list with the largest team on record.

Which city has the most geothermal consultants?

Zurich leads with 29 headquartered companies, followed by Lausanne (12) and Bern (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,206 verified decision-maker contacts tracked across these 383 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 383 geothermal consultants based in Switzerland. Start with a free account, no credit card.

Download this list →

Related lists

Geothermal consultants by geography

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.